Fluid

Fluid (formerly Instadapp) combines lending, vaults and DEX liquidity through a shared liquidity layer, so the same capital can support lending and trading.

Capital efficiency: a shared liquidity layer lets collateral, debt, lending liquidity and trading liquidity work together — more efficient but more complex.

- Liquidity Layer: The core contract at the center of Fluid that custodies all protocol funds. It only interacts with the protocols built on top of it (not end users), consolidating liquidity from every module so newer protocols can automatically tap shared liquidity. It manages automated debt/supply limits, utilization rates, and pluggable interest-rate models. - Vaults (Smart Collateral & Smart Debt): Fluid's lending/borrowing protocol. Users supply collateral and borrow against it. The DEX integration introduces Smart Collateral (collateral doubles as AMM liquidity, earning lending interest plus trading fees) and Smart Debt (borrowed debt is deployed as trading liquidity, earning fees that offset borrow APR), pushing capital efficiency well beyond siloed lenders like Aave. - Fluid DEX: An AMM built directly on the Liquidity Layer, launched October 2024. It powers Smart Collateral and Smart Debt by turning lending/borrowing positions into productive trading liquidity. Within ~3 months it became the second-largest DEX on Ethereum by volume, and was the fastest DEX to surpass $10B cumulative volume on Ethereum (100 days). - FLUID token: The protocol's ERC-20 governance token on Ethereum (max supply 100M). Formerly INST; rebranded to FLUID in December 2024 via a 1:1 conversion on the same contract with no holder action required. Holders govern fee structures, integration priorities, and risk parameters through the Fluid DAO.

- Fluid (FLUID) — Token, Governance token (ex-INST) - FLUID (FLUID) — Token, Governance & utility token - fUSDC, fETH (fTokens) (fUSDC) — Receipt, LendingReceipt

- Smart Contract: Fluid concentrates all funds in a single shared Liquidity Layer contract, so a bug there would be systemic across lending, vaults, and DEX. Auditors (MixBytes) noted the code is optimized for maximum gas efficiency at the expense of clarity, which complicates review and raises the risk of subtle undiscovered bugs. - Oracle: Vault liquidations depend on price oracles to value collateral and debt. Manipulated or stale oracle prices could trigger unfair liquidations or allow under-collateralized borrowing, a risk amplified because Smart Collateral/Smart Debt positions are also live AMM liquidity. - Systemic: The unified design means DEX, lending, and borrowing share the same liquidity pool. A sharp DEX volume/price shock or a mass withdrawal can simultaneously stress collateral valuation, borrow availability, and liquidation capacity across all modules rather than being isolated to one product. - Collateral: Because collateral and debt double as trading liquidity, positions are exposed to impermanent-loss-style rebalancing and volatile-asset price swings on top of normal borrow risk, which can accelerate a position toward its liquidation threshold. - Governance: FLUID holders control fee structures, integration priorities, risk parameters, and treasury actions (e.g., the DAO transferred 12M FLUID to the Labs team wallet in Dec 2024). Concentrated voting power or a malicious/erroneous parameter change could adversely affect users.

- Secured lending / margin loan combined with a market-maker desk: similar — Like a broker's secured lending desk, Fluid lets you post collateral and borrow against it, with liquidation if collateral value falls below thresholds.; differs — Unlike a bank where posted collateral sits idle, Fluid's Smart Collateral and Smart Debt simultaneously deploy that same collateral and debt as market-making (AMM) liquidity, so a single pool of capital earns lending interest and trading fees at once - impossible in siloed TradFi products.